Lock.



G. A. F. EHRNER & P. G. H. HALLONGREN.

LOOK.

APPLICATION FILED SEPT. 3, 1908.

Patented Jan. 14, 1913.

3 SHEETS-SHEET 1.

P MH I G. A. F. EHRNER & P. G. H. HALLONGREN.

LOOK.

APPLICATION IILED SEPT. 3, 190a.

Patented Jan. 14, 1913.

3 SHEETS-SHEET 2.

LOCK.

APPLICATION FILED SEPT. 3, 1908.

Patented Jan. 14, 1913.

3 SHEETS-SHEET 3.

onus

STATES PATENT orrion.

CARL AXEL FREIDRIK EHRNER, 0F STOCKHOLM, AND PER GEORG- HALVAR HALLON-GBEN, OF ELFSJS, NEAR STOCKHOLM, SWEDEN.

LOCK.

Specification of Letters Patent.

Patented Jan. 14, 1913.

Application filed September 3, 1908. Serial No. 451,592.

To all whom it may concern:

Be it known that we, CARL AXEL FREDRIK EHRNER, a subject of the King ofSweden, and resident of Frejgatan 46 Stockholm, Sweden, and PER GnonoHALVAR HALLON- GBEN, a subject of the King of Sweden, and resident ofElfsjo, near Stockholm, Sweden, have invented certain new and usefulImprovements in Locks, of which the following is a specification,reference being had therein to the accompanying drawings.

The present invention has for its object an improved lock which isprincipally characterized by the fact that the lock bolt or otherlocking device on the inner side of the door is connected with thehandle on the outside of the same in the manner that when the bolt isacted upon for bolting the door the handle on the outside of the samewill either be brought down into a groove in the door, respectively in aplate on the door, or in some other way be removed so that it cannot becaught when the door is bolted.

Another feature of our invention consists in arrangements whereby thehandle is locked in its out-standing position when the door is unbolted.

Another feature of our invention consists in arrangements whereby thehandle is locked in its removed position when the door is bolted.

Another feature of our invention consists in the arrangement of meansthat result in lost motion in the connection between the handle and boltor other locking device.

The presentlock is especially adapted to be applied in connection withdoors of such rooms on which it is desirable to indicate at somedistance that they are occupied, such as for instance closets,compartments of bathing houses, railway wagons, steamers and the like.Thus, when'the handle is in its out-standing position it is, a sign,that the room or compartment is unoccupied, but when the handle is inits removed position it is a sign that the room is occupied. Thedifferent positions of the handle can, as stated above, be observed at adistance.

The accompanying drawings illustrate some forms of embodiment of theinvention.

Figures 1 and 3 are horizontal sections through two different forms ofthe 'lock. Figs. 2 and 4: respectively show side views of the saidforms. Figs. 5 and 6 show a form of a lock where the bolt is turnable.

Fig. 7 shows a lock where the handle is drawn into the door when thelatter is bolted.

In Figs. 1 and 2 a is the bolt,'b is the handle, 0 is the pivot of thelatter, d is a cylindrical part attached to the handle and e is a noseor projection connected with the said part. In the nose there is a holeor track 7 comprising an oblong part and a wider part at the free end ofthe nose. In the wider part of the hole there are two straight or plainsurfaces g and 9 so arranged that the former g is parallel with the boltwhen the handle is in its out-standing position the latter 9 beingparallel with the bolt when the handle is in its removed position. 72.is a pin projecting from the bolt. 2' is the groove in the plate j onthe outside of the door, in which the handle will be folded whenremoved. 70 is a knob by means of which the bolt is operated. On the inside of the door there is a plate Z provided with a slit 4% for thescrew 92 carrying the knob is.

The function of the above described lock is the following: When the roomor compartment is unoccupied the difierent parts are in the positionsindicated on Fig. 1. Thereby the pin it rests on the plain surface 9thereby locking the handle in its out-standing position so that itcannot be folded down. Now, if the door is to be bolted by a person whois in the room or compartment the bolt, by means of the knob, is slid tothe position indicated by dotted lines in Fig. 1. On account of the factthat there is a lost motion in the connection between the bolt and thehandle the bolt moves to begin with without acting upon the handle;thereafter the pin h will act upon the opposite surface of the track 7thereby causing the handle to be folded down so that it is finallyintroduced into the groove 2'. The different parts of the lock therebyoccupy the positions indicated by dotted lines in Fig. l. The pin herebyrests on the plain surface 9 thereby locking the handle in its foldeddown position, and thereby preventing the opening of the handle by theintroduction of a sharp tool or the like between the handle and the sidewall of the groove. I

By providing for lost motion in the connection between the bolt and thehandle the following is attained: If for instance, the bolt has not beenslid to the end of its path .the bolt can be'slid over and,consequently, the handle has not come down into the groove 2' the samecan be folded up to its extreme out-standing position from the outsideof the door, whereby the bolt is simultaneously brought to the right.Hereby the pin will, however, be in contact with the left side of thetrack evenafter the handle has come to its extreme out-standing positionThe door, however, cannot be opened unless the pin is in contact withthe right side of the track (surface 9), but as to this position only bymeans of the knob 70, it will be impossible to open the door fromwithout, even if the handle by a mistake has not come down into thegroove 2'.

In the form of embodiment shown in Figs. 3 and i the pin it is attachedto the projecting part 6, the track f being arranged in a part 6projecting from the bolt. The surface 9 for locking the handle in theout-standing position is in this case the end surface of the projection6 Figs. 5 and 6 show another form of the {lock in which the bolt a canbe turned on the pivot 0 With the said pivot is connected a bar 0 orsimilar device which, on turning the pivot 0 acts upon a projection 22connected with the shaft 5 of the handle vb When the door'is to bebolted and the bolt is thereby moved from the position in Fig. 5 to thatindicated by dotted lines in the same figure the bar 0 will act upon theprojection 79 so that the handle is folded down and forced into thegroove 3 In Fig. 7 r is the bolt, 8 is the knob by which the bolt can beoperated, and u is the handle, which is arranged in such a manner thatit is drawn into a hole in the door when the door is bolted. Thisposition is indicated by dotted lines in Fig. 7. The handle it isconnected with a lever 12, which is pivotally mounted on a pivot 00.This lever is connected with the bolt in such a manner that a pin whichis attached to a bar a enters a groove y in a part projecting from alever 42.

It is to be understood that the construction of the several parts can bevaried in many respects without going out of the limits of the presentinvention.

Having now described our invention what we claim as new and desire tosecure by Letters Patent is:

1. A device of the character described comprising a bolt, a handlemounted for rotary movement having a projection thereon, means on thebolt positioned to contact with the projection on the handle to impartmovement to the handle when the bolt is moved, the contact of theprojection on the handle with the means on the bolt holding the handleagainst movement when the bolt is at the limit of its movement in eitherdirection.

2. A device of the character described comprising a bolt, a handlemounted for rotary movement having a projection thereon and means on thebolt positioned to contact with the projection on the handle to impartmovement to the handle when the bolt is moved, said bolt having movementindependent of the handle before the means on the bolt contacts with theprojection on the handle.

3. A device of the character described comprising a bolt capable ofreciprocal movement, a handle capable of rotative movement having aprojection thereon, and means on the bolt positioned to contact with theprojection on the handle to impart such rotative movement to the handlewhen the bolt is moved, said bolt having movement independent of thehandle before the means on the bolt contacts with the projection on thehandle.

In testimony whereof we have signed our names hereunto in the presenceof two subscribing witnesses.

GARL AXEL FREDRIK EHRNER. PER GEORG IIALVAR HALLONGREN.

Witnesses HJALMAR ZETTERSTROM, ELVA ROSEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

